[0013] See figure 1 The present invention discloses a wireless communication device 100, which, in addition to general communication functions, can also test the probability of lying between the two communicating parties by collecting and processing human physiological data and voice information during communication. The wireless communication device 100 includes a signal acquisition unit 10, a data processing unit 20, a radio frequency transceiver unit 30, and a display unit 40. The data processing unit 20 and the signal acquisition unit 10, the radio frequency transceiver unit 30 and the display unit 40 are all electrical. connection.
[0014] The signal acquisition unit 10 includes a first signal acquisition module 12 and a second signal acquisition module 14.
[0015] The first signal collection module 12 is a universal omnidirectional microphone. In this embodiment, the first signal collection module 12 can be used to collect voice information when the two communicating parties speak and transmit it to the data processing unit 20. The data processing unit 20 To measure the frequency of breathing rhythm change and voice rhythm change frequency of the communicating parties. Specifically, the breathing rhythm change frequency refers to the length of the speech change between the communicating parties each time they breathe. In practice, some breathing and ventilation sounds can be set and stored in the data processing unit 20 in advance, that is, the audio generated during breathing and ventilation. Signal as a contrast signal. When the wireless communication device 100 is used for a call, the data processing unit 20 analyzes the voice signal received by the first signal acquisition module 12, and uses each of the voice signals similar to the preset breathing sound as a basic sentence Boundary, the number of syllables between every two basic sentence-changing boundaries is regarded as the length of sentence-changing. Normally, the length of the sentence change is about 15 syllables/breath when speaking under normal circumstances. If the sentence is changed too fast, it indicates that the person is emotionally unstable and the probability of lying is greater. The frequency of voice rhythm changes refers to the frequency of modal particles (such as um, ah) appearing when the communicating parties speak. In practice, according to the language used by the caller, the data processing unit 20 can be configured to store some specific pronunciation vocabulary as modal particles in advance. During the call, when the first signal acquisition module 12 receives these preset modal particles When the same voice is pronounced, the data processing module 24 can use this to determine that the voice rhythm of the caller has changed once. If the rhythm changes too fast, it indicates that the caller is emotionally unstable and the probability of lying is greater.
[0016] The second signal collection module 14 is a directional microphone, which can receive audio signals in a certain angular range. In this embodiment, the sensitivity of the second signal acquisition module 14 is about 35dBV/Pa, and it is set at the end of the wireless communication device 100 with polygraph function close to the earpiece, which is close to the temple of the caller when in use. During the call, the number of times of the temple pulse of both parties is measured by monitoring the sound of the temple pulse of both parties in the call. Normally an adult’s pulse rate is about 7075 beats per minute. If the pulse is too fast, it indicates that the caller is emotionally unstable and the probability of lying is greater.
[0017] The data processing unit 20 includes an analog/digital (Analog/Digital, A/D) conversion module 22 and a data processing module 24 electrically connected to each other. The analog/digital conversion module 22 is simultaneously electrically connected with the first signal acquisition module 12 and the second signal acquisition module 14 to convert the three sets of analog audio signals collected by the signal acquisition unit 10 into digital signals. The data processing module 24 is used to receive the digital signal transmitted by the analog/digital conversion module 22, and send the digital signal to the radio frequency transceiver unit 30 after further processing (such as encoding). At the same time, the data processing module 24 is used to collect and process the three sets of audio signals transmitted by the counterparty's radio frequency transceiver unit 30, and compare them with their respective preset standards, so as to perform scoring processing, and then estimate the probability of the caller lying. In this embodiment, according to the general physiological indicators of the Chinese, the preset standards and scores of the respiratory rhythm change frequency, the voice rhythm change frequency and the temple pulse frequency of the data processing module 24 are as shown in Tables 1 to 3:
[0018] Table 1 Preset criteria and scores for the frequency of breathing rhythm changes
[0019] The speaking syllable between every breath
[0020] Table 2 Preset criteria and scores for the frequency of voice rhythm changes
[0021] Number of modal particles per minute
[0022] Table 3 The preset standards and scores of the pulse frequency at the temple
[0023] Temple pulses per minute
[0024] Then, the data processing module 24 adds up the respective scores of the above three sets of signals and compares them with a preset total score interval standard to determine the lying probability of the caller. It can be understood that the data processing module 24 can also judge the probability of lying only by processing any one or two groups of the above-mentioned signals. In this way, even if the liar calls through an ordinary phone, the data processing module 24 can only perform corresponding processing on the voice signal from the other party and calculate the probability of lying. In this embodiment, the approximate correspondence between the preset total score interval and the lying probability is shown in Table 4:
[0025] Table 4 Score and Lie Probability Standard
[0026] Total Score
[0027] Finally, the data processing module 24 transmits the total score and the lying probability to the display unit 40.
[0028] The radio frequency transceiver unit 30 includes a radio frequency module 32 and an antenna 34 electrically connected to each other. The radio frequency module 32 is electrically connected to the data processing module 24. When the wireless communication device 100 is in the signal transmission state, the radio frequency module 32 is used to convert the three sets of digital audio signals processed by the data processing module 24 into radio frequency signals, and send them to the other party of communication via the antenna 34, so that the other party Acquire the radio frequency signal; when the wireless communication device 100 is in the signal receiving state, the radio frequency module 32 is used to convert the radio frequency signal received by the antenna 34 into a digital signal, and transmit it back to the data processing module 24 for grade scoring processing. Generally, the existing modulator/demodulator can assume the role of the radio frequency module 32.
[0029] The display unit 40 may be an existing liquid crystal display (LCD) or other existing display device, which is electrically connected to the data processing module 24 to display relevant data transmitted by the data processing module 24.
[0030] It can be understood that the data processing module 24 of the present invention can set the preset standards and scores for the frequency of breathing rhythm change, the frequency of voice rhythm change, and the number of temple pulses, as well as the probability of lying and the total score based on actual test data, and are not limited to this implementation. Relevant data from the examples.
[0031] It can be understood that the above-mentioned physiological indicators can be modified according to the differences in physiological indicators of the main expected customer groups when the wireless communication device 100 is manufactured.
[0032] It can be understood that the second signal acquisition module 14 of the present invention is not limited to the directional microphone described in the embodiment. The second signal acquisition module 14 can also be composed of several sensors, such as a temperature sensor or a respiration sensor, to collect other human physiology. Data; At this time, the preset standards and procedures of the data processing module 24 can be changed accordingly.
[0033] See figure 2 , The present invention provides a method for performing polygraph detection using the above wireless communication device 100, the method specifically includes the following steps:
[0034] Step S1: Provide one of the above-mentioned wireless communication device 100 for the calling party;
[0035] Step S2: The calling party dials to establish voice communication with the called party;
[0036] Step S3: The calling party antenna 34 receives the voice signal transmitted by the called party;
[0037] Step S4: The calling party radio frequency module 32 converts the voice signal into a digital signal, and transmits it to the data processing module 24;
[0038] Step S5: The calling party data processing module 24 collects the digital signal transmitted by the radio frequency module 32, and compares the signal with a preset standard;
[0039] Step S6: The calling party data processing module 24 analyzes and calculates the digital signal, and classifies and scores the signal;
[0040] Step S7: The calling party data processing module 24 calculates the total score of the aforementioned signal and estimates the lying probability of the called party based on the total score, and transmits the lying probability to the display unit 40;
[0041] Step S8: The calling party display unit 40 displays the lying probability of the called party.
[0042] It is understandable that the called party can also use the wireless communication device 100 to analyze the audio signal sent by the calling party through the above-mentioned method, and measure the lying probability of the calling party. During this process, the second signal collection module 14 can collect the temple pulse signals of the own party and transmit them to the data processing module 24 of the other party, so as to increase the types of data available for reference in the polygraph process, and help to more accurately communicate with each other. Measure the opponent’s probability of lying.
